import java.util.Scanner;

public class Main1582 {
    public static void main(String[] args) {
        Scanner sc=new Scanner(System.in);
        int n= sc.nextInt();
        int[] arr=new int[n];
        for (int i=0;i<arr.length;i++){
            arr[i]=sc.nextInt();
        }
        for (int i=0;i< arr.length;i++){
            if (i<n/2){
                System.out.print(arr[i]*2+" ");
            }else System.out.print(arr[i]+1+" ");
        }

    }
}
